netlink: Rearrange netlink_kernel_cfg to save space on 64-bit.

Suggested by Jan Engelhardt.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index b3dc992..f80c56a 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -183,10 +183,10 @@
 /* optional Netlink kernel configuration parameters */
 struct netlink_kernel_cfg {
 	unsigned int	groups;
+	unsigned int	flags;
 	void		(*input)(struct sk_buff *skb);
 	struct mutex	*cb_mutex;
 	void		(*bind)(int group);
-	unsigned int	flags;
 };
 
 extern struct sock *__netlink_kernel_create(struct net *net, int unit,